What is htmx?

What is htmx?

htmx lets developers update parts of a page with HTML returned by the server, using attributes added directly to HTML. In many cases, dynamic behavior can be defined on a button, form, or link without writing custom JavaScript.

For example, when a search form is submitted, the whole page does not need to reload. Only the result list can change. The server returns an HTML fragment instead of JSON, and htmx swaps that fragment into the target element.

How It Works

htmx uses attributes such as hx-get, hx-post, hx-target, and hx-swap. These define which request to make, where the response should be placed, and how it should replace the current content.

This approach can be an alternative to SPA architecture. Instead of keeping all UI state in the browser, much of the business logic stays on the server. JavaScript does not disappear entirely; it may still be needed for small interactions and third-party components.

Business Use

htmx is useful for admin panels, internal tools, simple CRUD screens, filterable lists, and form flows. Classic frontend frameworks may be a better fit for complex offline experiences or applications with heavy client-side state.